If thou canst believe - This was an answer to the request, and there was a reference in the answer to the "doubt" in the man's mind about the power of Jesus. "I" can help him. If thou" canst believe," it shall be done. Jesus here demanded "faith" or confidence in his power of healing. His design here is to show the man that the difficulty in the case was not in the want of "power" on his part, but in the want of "faith" in the man; in other words, to rebuke him for having "doubted" at all whether he "could" heal him. So he demands faith of every sinner that comes to him, and none that come without "confidence" in him can obtain the blessing.

All things are possible to him that believeth - All things can be effected or accomplished - to wit, by God - in favor of him that believes, and if thou canst believe, this will be done. God will do nothing in our favor without faith. It is right that we should have confidence in him; and if we "have" confidence, it is easy for him to help us, and he willingly does it. In our weakness, then, we should go to God our Saviour; and though we have no strength, yet "he" can aid us, and he will make all things easy for us.

If Thou canst Believe - This was an answer to the inquiry above. I can furnish a sufficiency of power, if thou canst but bring faith to receive it. Why are not our souls completely healed? Why is not every demon cast out? Why are not pride, self-will, love of the world, lust, anger, peevishness, with all the other bad tempers and dispositions which constitute the mind of Satan, entirely destroyed? Alas! it is because we do not believe; Jesus is able; more, Jesus is willing; but we are not willing to give up our idols; we give not credence to his word; therefore hath sin a being in us, and dominion over us.

Jesus said unto him, if thou canst believe,.... As the man put an "if" on the power of Christ, Christ puts an "if" on the faith of the man; and tacitly suggests, that power was not wanting in himself, but faith in him; and should that cure not be performed, it would not be owing to any inability in him, but to his own incredulity. The Arabic version renders it, "what is this thy: saying, if thou canst do any thing?" What dost thou mean by it? Thou oughtest not to doubt of my power; there is no reason for it, after so many miracles wrought; upbraiding the man with his unbelief; and the Ethiopic version renders it thus, "because thou sayest, if thou canst": wherefore to show that power was not wanting in him, provided he had but faith, it follows,

all things are possible to him that believeth; that is, "to be done" to him, as the Syriac and Ethiopic versions supply: for all things are not possible to be done by the believer himself, but all things are possible to be done for him, by God, or Christ, or the Spirit of God: thus our Lord, as he elsewhere does, ascribes that to faith, which is done by a divine power.

If thou canst believe (τὸ εἰ δύνῃ)

Lit., the if thou canst. The word believe is wanting in the best texts. It is difficult to explain to an English reader the force of the definite article here. "It takes up substantially the word spoken by the father, and puts it with lively emphasis, without connecting it with the further construction, in order to link its fulfilment to the petitioner's own faith" (Meyer). We might paraphrase thus. Jesus said: "that if thou canst of thine - as regards that, all things are possible," etc. There is a play upon the words δύνῃ, canst, and δυνατὰ, possible, which cannot be neatly rendered. "If thou canst - all things can be."

Jesus said unto him, If thou canst believe, {h} all things are possible to him that believeth.

(h) Christ can and will do anything for those that believe in him.

9:23 If thou canst believe. The question is not whether Jesus can, but whether the afflicted father can. Can he have the needful faith in Christ? Faith is the great need.

9:23 If thou canst believe - As if he had said, The thing does not turn on my power, but on thy faith. I can do all things: canst thou believe?

23. Jesus said unto him, If thou canst believe-The man had said, "If Thou canst do anything." Jesus replies.

all things are possible to him that believeth-"My doing all depends on thy believing." To impress this still more, He redoubles upon the believing: "If thou canst believe, all things are possible to him that believeth." Thus the Lord helps the birth of faith in that struggling soul; and now, though with pain and sore travail, it comes to the birth, as Trench, borrowing from Olshausen, expresses it. Seeing the case stood still, waiting not upon the Lord's power but his own faith, the man becomes immediately conscious of conflicting principles, and rises into one of the noblest utterances on record.

9:14-29 The father of the suffering youth reflected on the want of power in the disciples; but Christ will have him reckon the disappointment to the want of faith. Very much is promised to our believing. If thou canst believe, it is possible that thy hard heart may be softened, thy spiritual diseases may be cured; and, weak as thou art, thou mayest be able to hold out to the end. Those that complain of unbelief, must look up to Christ for grace to help them against it, and his grace will be sufficient for them. Whom Christ cures, he cures effectually. But Satan is unwilling to be driven from those that have been long his slaves, and, when he cannot deceive or destroy the sinner, he will cause him all the terror that he can. The disciples must not think to do their work always with the same ease; some services call for more than ordinary pains.